Operation Manual

41
There are several ways to check that a hidden volume is being protected against damage:
1. A confirmation message box saying that hidden volume is being protected is displayed after
the outer volume is mounted (if it is not displayed, the hidden volume is not protected!).
2. In the Volume Properties dialog, the field Hidden Volume Protected says ‘Yes’:
3. The type of the mounted outer volume is Outer:
Important: When an adversary asks you to mount an outer volume, you, of course, must not
mount the outer volume with the hidden volume protection enabled. You must mount it as a
normal volume (and then VeraCrypt will not show the volume type "Outer" but "Normal").
Note that during the time when an outer volume is mounted with the hidden volume
protection enabled, the adversary can find out that a hidden volume exists within the outer
volume (he/she will be able to find it out until the volume is dismounted).
Warning: Note that the option ‘Protect hidden volume against damage caused by writing to outer
volume’ in the Mount Options dialog window is automatically disabled after a mount attempt is
completed, no matter whether it is successful or not (all hidden volumes that are already being
protected will, of course, continue to be protected). Therefore, you need to check that option each
time you attempt to mount the outer volume (if you wish the hidden volume to be protected):